Rollup merge of #90928 - Mark-Simulacrum:fix-date-logging, r=pietroalbini
Rollup merge of #90928 - Mark-Simulacrum:fix-date-logging, r=pietroalbini

Use a different server for checking clock drift

The detectportal.firefox.com server seems to return a random-ish date; for
example I see the following across 5 curl's done consecutively locally, where
the real date is approximately 15 Nov 2021 06:36 UTC.

Date: Mon, 15 Nov 2021 13:34:53 GMT
Date: Mon, 15 Nov 2021 12:20:21 GMT
Date: Mon, 15 Nov 2021 00:06:47 GMT
Date: Mon, 15 Nov 2021 17:14:33 GMT
Date: Mon, 15 Nov 2021 13:33:21 GMT

aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust